Develop Reference

jquery slidetoggle() not hiding :before element

All of my elements hide and show correctly using slidetoggle(), EXCEPT for my li:before. I've tried forcing the overflow, visibility, display, etc on the :before and the li, and nothing is helping, it still shows the bullets set using the :before class. What needs to happen to hide these bullets when slidetoggle() is activated/deactivated?
jQuery(document).ready(function($) {
$("#read-more").click(function(){
$(".careers-position").slideToggle(800);
return false;
});
});
ul {
line-height: 2.4em !important;
margin-left: 20px;
padding: 0 0 23px 1em;
}
li {
list-style: none !important;
color: #656565;
}
li:before {
content: "";
background: #9e9e9e;
width: 6px;
height: 6px;
display: block;
position: absolute;
left: 18px;
margin-top: 16px;
border-radius: 20px;
overflow: hidden;
backface-visibility: hidden;
}
.careers-position {
display: none;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="careers-position">
<h3>Pilot</h3>
Position information will go here.
We are an equal opportunity employer and all qualified applicants will receive consideration for employment.
<strong>Requirements:</strong>
<ul>
<li>Multi Commercial (ATP preferred)</li>
<li>First Class Medical</li>
<li>Passport</li>
<li>90 day currency</li>
<li>Clean FAA record</li>
</ul>
</div>
<div class="careers-read-more">
<a class="quick-btn" id="read-more" href="#">Read More</a>
</div>

Add position relative:
.careers-position {
display: none;
position: relative;
}
Demo

Here look at this fiddle https://jsfiddle.net/wfccp58p/4/
ul { line-height: 2.4em; margin-left: 20px;padding: 0 0 23px 1em;list-style-type: none;}
I removed the li:before and added the list-style-type to the ui. Not sure if you still wanted some of the LI:Before pseudo stuff, but this fixes your issue.

Responsive nav not appearing as intended

I am trying to create a responsive nav bar, but I am coming across issues making it appear in the way intended.
Here is an image of how it looks when window is maximized:
Here is an image when the window is resized:
Here is an image of what I want the page to look and function like:
Issues:
As the images show, the header currently shows the links "stretches, mobility" etc, when I want it to display "Join / Log In" etc (image 3).
When menuis clicked, I want the nav to dynamically display the other links.
Here is what I have tried so far: https://jsfiddle.net/hudnybux/

Ok, I think I got it to look almost exactly like your screenshots. One of the main things I had to do was move your nav-trigger up within html.
<div id="header-main">
<div id="nav-trigger"><span>Menu</span></div>
<nav id="main-navigation" role="navigation">
<ul>
<li>Stretches</li>
<li>Mobility</li>
<li>Posture</li>
</ul>
</nav>
<!--<nav id="nav-mobile"></nav>-->
</div>
Technically you no longer need nav-mobile nav. I also fixed your caret triangle next to "menu". It needed a height and width of 0.
width: 0;
height: 0;
Edit:
I have revisited my solution. Just as a suggestion, I am recommending css transitions instead of jQuery slideDown and slideUp. You were already applying a class and that is all we need to create dynamic animations. jQuery's methods apply the styles inline and frankly leave you with less flexibility.
https://jsfiddle.net/qnco3x7e/8/

You will need to add another media query
#media all and (max-width: 460px) {
nav#main-navigation li {
display:block;
border-bottom: 1px solid #fafafa;
}
}

You can use flexbox css properties. It's very powerfull. http://www.alsacreations.com/tuto/lire/1493-css3-flexbox-layout-module.html

Writing others' code for them is not in the spirit of Stack Overflow, but, as I prefer teaching by showing and not telling, I went ahead and did the task for you. Observe how I changed your implementation and learn as much as you can!
The Strategy
Use the same HTML markup for the main menu (Stretches, Mobility, Posture) on both large and small screen widths, instead of using JavaScript to duplicate it in two places.
Use the same CSS for both menus as a starting point; in the media query for small screen sizes, change the main menu to be horizontal
Show everything by default; use display: none only on screen sizes you don't want to show something on.
JSFiddle
$(document).ready(function() {
$("#main-nav-mobile-trigger span").click(function() {
$(this).toggleClass("open");
if ($(this).hasClass("open")) {
$("#main-nav").addClass("open").slideDown(250);
} else {
$("#main-nav").removeClass("open").slideUp(250);
}
});
});
.pageOverlay {
width: 900px;
margin: 0 auto;
}
/******************/
nav {
background-color: #fefefe;
/*NAV COLOUR*/
padding: 10px 0;
border-bottom: 1px solid #e3e3e3;
text-align: center;
}
nav ul li a {
color: #a4a4a5;
text-decoration: none;
}
nav ul li a:hover {
color: black;
}
nav ul {
display: inline-block;
list-style-type: none;
margin: 0;
padding: 0;
text-align: center;
}
nav li {
display: inline-block;
padding: 0 2px;
}
nav li:last-child {
border-right: none;
}
nav a {
display: block;
color: white;
padding: 10px 20px;
}
/****************************************************************/
/* Menu CSS which pops up when window is resized */
#main-nav-mobile-trigger {
text-align: center;
}
#main-nav-mobile-trigger span {
display: inline-block;
padding: 10px 30px;
cursor: pointer;
text-transform: uppercase;
}
#main-nav-mobile-trigger span:after {
display: inline-block;
margin-left: 10px;
width: 20px;
height: 10px;
content: "";
border-left: solid 10px transparent;
border-top: solid 10px #e3e3e3;
border-right: solid 10px transparent;
}
#main-nav-mobile-trigger span:hover {
background-color: #e3e3e3;
}
#main-nav-mobile-trigger span.open:after {
border-left: solid 10px transparent;
border-top: none;
border-bottom: solid 10px #fff;
border-right: solid 10px transparent;
}
#media all and (min-width: 901px) {
#top-nav {
text-align: right;
}
#main-nav {
text-align: left;
}
#main-nav-mobile-trigger {
display: none;
}
}
#media all and (max-width: 900px) {
#main-nav:not(.open) {
display: none;
}
#main-nav ul {
display: block;
}
#main-nav li {
display: block;
border-bottom: solid 1px #e3e3e3;
}
#main-nav li:last-child {
border-bottom: none;
}
#main-nav a {
padding: 10px 30px;
}
#main-nav a:hover {
background-color: #e3e3e3;
color: #fff;
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="pageOverlay">
<nav id="top-nav" role="navigation">
<ul>
<li>Join / Log In</li>
<li>Help</li>
<li>Shop</li>
</ul>
</nav>
<div id="main-nav-mobile-trigger"><span>Menu</span></div>
<nav id="main-nav" role="navigation">
<ul>
<li>Stretches</li>
<li>Mobility</li>
<li>Posture</li>
</ul>
</nav>
</div>
<!-- pageOverlay closed-->
The HTML
I removed your container <div>s (#header and #header-main), as they serve no purpose as far as layout is concerned.
There are now only three parts to the header area. In order they are:
#top-nav - Join/Login, Help, Shop
#main-nav-mobile-trigger - MENU button
#main-nav - Stretches, Mobility, Posture
The JavaScript
When the MENU button (#main-nav-mobile-trigger span) is clicked:
Toggle its .open class.
If it has the .open class,
Add #main-nav's .open class.
Otherwise,
Remove #main-nav's .open class.
The CSS
You had duplicates of the styling rules for each horizontal menu (formerly #nav-main and #main-navigation, which are very easy to confuse). These are now combined into one set of rules under the more general selector, nav. Additionally, their text-align is set to center by default (the desired alignment on small screen widths).
For big screen widths (#media all and (min-width: 901px)):
Align #top-nav to the right and #main-nav to the left.
Hide the MENU button.
For small screen widths (#media all and (max-width: 900px)):
If #main-nav doesn't have the .open class, hide it.
Display the menu items in #main-nav horizontally.
I hope this helps you. Best of luck with your future adventures in front-end development!

How to target another element to join with another positioned element?

I've been going through problems in positioning navbar even after the fact that its responsive. Problem comes when zooming in and zooming out (except for Mozilla), and I got no choices than asking experts for a solution because I am a noob in coding.
Chrome zoom-out: https://s31.postimg.org/kjnbou0yj/zoom_out_chrome.png
Mozilla zoom-out (also perfect in zoom-in): https://s31.postimg.org/ud3lz1i3v/zoom_out_moz.png
Basically, I want to join my navbar with another div element so that it do not move from its position and I don't know how to use :target etc, and do not even know if target will solve my problem.
My need: I just need my navbar to stick to one size. With current settings, it is working PERFECTLY with MOZILLA ONLY. I don't know why it show blank space in chrome and other browsers when zoom-out and when zoom-in. Working fine with Chrome 100% zoom and working fine with Opera 100% zoom. The problem comes when zooming in or zooming out. Again, it is working perfectly for mozilla in zooming etc, no such problems with mozilla. And my navbar is responsive too.
My guess: I think that attaching this navbar with hidden div class could solve this problem. BUT I am a complete noob in coding and I can just guess.
Here is the code of my navbar:
ul.pnav {
position: relative;
border-top-left-radius: 15px;
border-top-right-radius: 15px;
border: none;
list-style-type: none;
width: 900px;
height: 55px;
margin: auto;
top: 281px;
left: 0;
right: 0;
padding: 0;
overflow: hidden;
background-color: #767676;
z-index: 9999;
}
#-moz-document url-prefix() {
ul.pnav {
top: 286px
}
}
ul.pnav li {float: left;}
ul.pnav li a {
display: inline-block;
color: #f2f2f2;
text-align: center;
padding: 14px 16px;
text-decoration: none;
transition: 3s;
font-size: 17px;
font-family: Arial;
font-weight: bold;
}
ul.pnav li a:hover {background-color: #111;}
ul.pnav li.icon {display: none;}
#media screen and (max-width:680px) {
ul.pnav li:not(:first-child) {display: none;}
ul.pnav li.icon {
float: right;
display: inline-block;
}
}
#media screen and (max-width:680px) {
ul.pnav.responsive {position: relative;}
ul.pnav.responsive li.icon {
position: absolute;
right: 0;
top: 0;
}
ul.pnav.responsive li {
float: none;
display: inline;
}
ul.pnav.responsive li a {
display: block;
text-align: left;
}
}
I have this in html as a code:
<ul class="pnav">
<li>Home</li>
<li>News</li>
<li>Contact</li>
<li>About</li>
<li class="icon">
☰
</li>
</ul>
This is div class to which I want to attach navbar.
<div class="fornavbar"></div>
I don't know how to proceed further, please help.

Look at this fiddle: https://jsfiddle.net/8qepe4gw/2/
In order for them to align together you just simply put them both inside of a common div like this (.container),
<div class="container">
<ul class="pnav">
<li>Home</li>
<li>News</li>
<li>Contact</li>
<li>About</li>
<li class="icon">☰</li>
</ul>
<div class="fornavbar"></div>
</div>
And then you assign a width to the .container, and then you can give both the .pnav and .fornavbar a width of 100% so they stretch all the way out inside of the container, as in they have the same width.
Now the reason why it only worked in firefox is probably because of this part of the code:
#-moz-document url-prefix() {
ul.pnav {
top: 286px
}
}
Because #-moz-document only targets firefox.
It's still gonna work in all browsers now though with the new code I added in the fiddle so you shouldn't have to worry about it, perhaps even delete that part of the CSS code(?).

Change one link into two on hover

I'm trying to create a link that changes into two links when you hover over the text. You can see something like what I want to do here: https://www.kenzo.com/en/ You can see that the collections link changes into two separate links for men and women when you hover over the link. At the moment I have managed to create a link that separates into two words when hovered over but not into two links.
Here is my HTML code:
<li><span>Collection</span></li>
And here is my CSS code:
#nav-item1:hover span {
display:none;
}
#nav-item1:hover:before {
content: "Men Women";
}
So the text changes which is great, but I haven't quite figured out how to turn the text into two separate links. I'm not sure if I have to use JS for this or not, as my JS knowledge terrible.
Any ideas?

If I understand you right you can try something like this:
li {
list-style: none;
}
li a {
display: none;
margin-left: .3em;
}
li:hover span {
display: none;
}
li:hover a {
display: inline-block;
}
<li>
<span>Collection</span>
Man
Women
</li>

Okay so here is a small breakdown of how you can achieve this.
There is a block element on the top of things.
Then there are two hidden elements that are children of the block element.
And when you hover over the block element the other ones are shown.
You can also hide the child element that contains the text on hover.
.block:hover .hide {
display: inline;
}
.block {
color: black;
font-size: 20px;
}
.hide {
display: none;
}
<div class="block">
<span class="default text">Hover</span>
<a class="hide" href="#">Snowball</a>
<a class="hide" href="#">Kitten</a>
<div>

.splitted {
display: none;
}
.links:hover .one-link {
display: none;
}
.links:hover .splitted {
display: inline;
}
<span class="links">
Collection
Men
Women
</span>

Please try this
#nav-item1{
position: relative;
}
#nav-item1:before,
#nav-item1:after{
display: none;
position: absolute;
top: 100%;
color: #000;
}
#nav-item1:hover:before,
#nav-item1:hover:after{
display: block;
}
#nav-item1:before{
content: 'Men';
right: 50%;
}
#nav-item1:after{
content: 'Women';
left: 50%;
color: green;
}
<ul>
<li><span>Collection</span>
</li>
</ul>

Displaying submenus on hover without javascript

I have a webpage that uses jquery to display a submenu div while a user is hovering over an a:link in the main parent menu.
$('.menu ul li').hover(function() {
$(this).find('.dropnav').stop(true, true).fadeTo('fast', 1);
}, function() {
$(this).find('.dropnav').stop(true, true).fadeOut(800, 0);
});
The problem is, I want this webpage's navigation feature to be independent of javascript. So when users do not have javascript enabled, the menu will still display - just without the effects of scrolls or fades.
Thanks.

Use the :hover CSS pseudo-class.
.menu ul li:hover .dropnav {
opacity: 1;
/* display: block; ? */
}

Here is a pretty solid example of a CSS based menu. There is JavaScript that goes with it, if you are looking for backwards compatibility to IE6.
http://qrayg.com/learn/code/cssmenus/

HTML
<ul class="main-nav">
<li>main nav-1
</li>
<li>main nav-2
<ul class="sub-nav">
<li>sub-nav-2.1</li>
<li>sub-nav-2.2</li>
<li>sub-nav-2.3</li>
</ul>
</div>
</li>
<li>main nav-3
<li>main nav-4
</ul>
css
ul.main-nav > li { position: relative; display: block; float: left; margin: 0 15px;}
ul.main-nav > li > a {display: block; line-height: 40px; }
ul.sub-nav { display:none; position: absolute; top: 40px; left: 0; min-width: 200px;}
ul.main-nav > li:hover ul.sub-nav { display: block; z-index: 999; }
check this one for live demo http://jsfiddle.net/q9YZf/